Typewriting machine



Jan. 11, 1927.

1.. c. MYERS ET AL TYPEWRI'TING MACHINE Fild April 29. 1926 2 Sheets-Shae}. 1

J n- 11 1927' c. MYERS ET AL TYPEWRITING MACHINE 2 Sheets-Sheet 2 Filed April 29, 1926 Patented Jan. 11, 1927.

UNITED STATES 1,514,252 PATENT OFFICE.

LEl/VIS C. MYERS, OEFREEPOBT, AND GEORGE IE. HifiNDLEY OF GLENDALE, NEW YORK,

ASSIGNORS 'IO ROYAL TYPEWRITER COMPANY, INC, OF NEW YORK, N. Y.,Y A COR- PORATION OF NEW YORK.

TYPEWRITING MACHINE.

Application filed April 29,1926. Serial No. 105,562.

This invention relates to a support for. the entire shift frame which is made adjustable on the main frame in order that the position of the platen maybe determined ac-' curately with reference to the impression of the entire face of the type bars. It is illustrated as applied to a small portable machine of very compact construction, but may be embodied in other types of machines. It is particularly in the nature of an improvement upon the construction shown in the patent to Myers and Handley, 1,562,119, November 17, 1925.

An object of the invention relates to the provision .of means whereby when the entire 7 shift frame is shifted for the purposes of adjustment, as above mentioned, the shift key lever and counter balance spring will be adjusted as a unit therewith in order tov preserve the proper relationship between these parts. The advantages of such a construction will be apparent from the following detailed description.

In the drawings: Figure 1 is a vertical fore and aft section wit-h parts. in elevation of a typewriting machine embodying the invention.

Figure 2 is a side view of one of the adjustable members detached from the machine. V V Figure 3 is afragmentary side elevation showing one means for obtaining a fine adjustmentof the movable frame. I I

Figure at is a detail section view showing another means of adjustment.

Figure 5 is a section onthe line 55 of Figure 1 with parts omitted, showing the mounting of the shift frame in the adjustable plates.

1 Figure 6 1s a view corresponding to Flgure 1 but showing a different form of platen shift lock mechanism.

Figure 7 is a top plan view of one side ofFigure 6 with partsomitted L Figure 8 is a side view of a portion of the machine frame.

The invention is disclosed as applied to a typewriting machine having a frame A. platen B, type bars C, whichare operated from keysD through any oldor desired form of connections and other usual instruinentalities. The type bars whenin printing position as shown in Figure 1 are adapted strike against an abutment which limits their movement toward the platen.

Rocker arms 8 are connectedat their forward ends to the rail structure just described and are secured at their other ends to the shaft 9, which at one side-of the machine'has a depending arm 10 provided with a stud 11 about which engages thehooked end of a link 12 which is connected at its forwardend to the upward end of an extension 13 of a member 14, which has a-forward extension 15 provided with a shift key 16. Pivoted to this forward extension 15 is a shift lock key 17 held in normal position by the usual spring I To the carriage rail 4 is rigidly secured an arm 19, to the lower end of which is pivoted a link 20 and the other end of this link is pivotally connected by a screw 21 to a shifting plate22. This parallel link motion is for the purpose of giving the shift frame and platen their proper movement when shifted for upper case characters.

Since the type bars are limited in their movement toward the platen it is necessary in'assembling the machine to position accurately the carriage in order that the type imprints can be clear. It is also necessary that this adjustment should be a right line and substantially perpendicular to the position taken by the type bars when in printing position; Such adjustment is attained in the following manner.

The plate 22 i above mentioned is of course duplicated at each side of the machine and there are pro vided in the side frame A openings 23 through which extend bent ears 24 of the plate 22. The plate isheld in its adjusted position by means particularly shown in Figure 5 from whichit appearsthat the screw 21 threads into the end of a stud 25, the end of which fits into the'plate 22. A screw. 26 passes through a short 'slot 26' in the. main frame'A- and also threads into the "The rockfshaft has salience antic-sided ism the end thereof and this cone bears in the correspondingly shaped end of a shorthollow stud '28. the other end of which fits into the plate 22, a screw 29 similar to the screw 26 in its form of mounting passing through a short slot 29 the machine frame A into the stud 28.

It is evident from this description that the whole shift fraire including the rock shaft 9 and the parallel link construction is supported by the plates 22 and that these plates with the structure supported thereby can be adjusted wi h reference to the main frame (1 larly in larger machines, it may be desirable to obtain a more fine adjustn'ient of the posiv tion of the plates 22 and the mechanism supported thereby. This may be attained in various ways. two of which are illustrated in lfigures 3 and 4:. I

In the form shown in Figure 3, the plate 22has an ear 80 offset therefrom, while the frame A has a similar ear 31 and a screw 32 is adapted to revolve idly in the ear 31 but to be threaded into the car 30. It is evident that by loosening the screws 26 and 29 and turningthe screws 82, proper adjustment of the shift frame may be attained. In the form shown in Figure 4. one of the cars 24 of the frame 22 is extended at 33. while the ma n frame A has an offset ear 34 through which passes a screw which threac into the ear 3; in a manner similar to that just described. The plates 22 also carry means for limiting the movement of the shift frame in its case shift nm'ement. This means comprises two step screws 36 and 37 adjustably threaded into means 38 and 39 struck up from the plates An ear 40 preferably tending from the member 19, cooperates th these stop screws in the usual maner. the form shown in Figure 1 the shift -e is locked in its normal position by .i'ea..s of an adjustable stop screw ll carried by the lower end of the frame 10 with which engages a bent over end 42 of the member 43 extending from the key actuated member 14. v p

In the main. the features above describec are or may be substantially identical witl those disclosed in the above identified patent.

It has been foundthat in such construction when the plates 22 and the shift frame car- I i'ied thereby are adjustable the proper relalock key 17 tion between the stop screws 41 and the offset end of the member l2 will be destroyed and that the adjustmentof the counter balance spring which is usually employed will also be effected. The mainpurpose of this invention is to devise means for over coming these objections and also to provide a construction whereby the adjustable shift frame composed of the plates 22 and the members carried thereby shall also carry the counterbalance spring and the shift key levers with their Slllft kGyS. This construction will now be i jart'icu'la-rly described.

Each plate 22 has a long forward extension t4: provided with a screw 4:5 which fits in an inclined slot 4-6 in the side frame of the machine and guides the plate when it is adjusted. The extension 44 also has a de pending car 4:7 and in these cars is mounted the shaft l8 which carries the rocking frame l l above mentioned. end of the extension iel is provided with a pin or stop member 49' which cooperates with a cut out 50 in the shift lock key 17 to hold the same in depressed position in the usual manner.

In the form shown inFigures G and 7 there is illustrated a modification of the means for locking the shift frame in normal and shifted positions. In this modification the arm has a short doi'vnwardextension 51 provided with a stud 52 with whicl'r coacts the open hooked end of the link 12, as in the first described form. A depending arm 19" has an offset ear 53 which coaets with the hooked end of a short lever 55 pivoted at to the extension of the plate 22. This lever is connected by a link '57 to the upper end of the extension 13 of the rocking frame 14;. hen the shift key or shift lock key is first depressed, the inital movement of the rocking frame will pull on the link 57 and move the hook 5st from over the ear 5:}, thus releasing the shift frame for its shifting movement. The shift has a downward extension 58 which is connected by a link 59 with the lower end'of a lever 60, preferably pivoted on the same stud 56 as the lever-55. This has an angular c'ut out (51 in its upper end which coacts with the ear 53 when the snift frame is moved by depression of the shift lock key. At this time the link 59 is pulled forwardly and the'upper end of the lever 60 is accordingly moved rearwardly so that the cut out 61 engages beneath the ear 5b and locks the shift frame in its upper position.

The counterbalance spring 62 is-con'ijiected at one end of an ear (323 of the arm 8 and at its other end to a stu'dtil carried by the plate 22.

It will be obvious from the above disclosure that whenever the plates 22 are moved for the purpose of adjustingthe The extreme forward till you

adjustment has once been attained between the various parts of this shiftable frame, that the frame as a whole can be adjusted to bring the platen into proper relation with the type without in any way destroying the adjustment existing between the various elements above specified.

It is obvious that the invention may be applied to shifting mechanisms of different character and embodied in machines of various types without in any way departing from the spirit thereof. Minor details may be changed and the form and dimensions of the various parts modified so that it is to be understood thatthe invention is limit-' ed only by the scope of the appended claims.

\Ve claim: 1. In a typewriting machine embodying a main frame, carriage, and pivoted type bars, the combination of a shift frame supporting the carriage for case shift movement, means i preserve proper relal ion between said levers and shift frame in all positions.

2. In a typewriting machine embodying a main frame, a carrlage, and pivoted type bars, the combination of a shift frame sup porting the carriage for case shift movement, means for mounting said shift frame for bodily adjustment as a unit relative to the main frame to obtain proper relation between the carriage and the type bars, and means for locking the shift frame in its lower case position also adjustable with the shift frame to preserve the proper relation of the parts.

In a typewriting machine embodying a main frame, a carriage, and pivoted type bars, the combination of a shift frame supporting the carriage for case shift movement, means for mounting said shift frame for bodily adjustment as a unit relative to the main frame to obtain proper relation between the carriage and the type bars, and means for locking the shift frame in its upper case position also adjustable with the shift frame to preserve the proper relation of the parts. 7

a. In a typewriting machine embodying a main frame, a carriage, and pivoted type bars. the combination of a shift frame sup porting the carriage for case shift move ment, means for mounting said shift frame for bodily adjustment as a unit relative to the main frame to obtain proper relation between the carriage and the type bars, and means for giving the shift frame its case shift movement, said means also adjustable with the shift frame to preserve the proper relation of the parts.

5. In a typewriting machine embodying a main frame, a carriage, and pivoted type bars, the combination of a shift fran'iesupporting'the carriage for case shift movement, means for mounting said shift frame for bodily adjustment as a unit relative to the main frame to obtain proper relation between the oarriage and the type bars, means for giving the shift frame its case shift movement, and means for lorking it in its lower case position, both said means being adjustable with the shift frame to preserve the proper relation of the parts.

6. In a typewriting machine embodying a main frame, a carriage, and pivoted type bars, the combination of a shift frame supporting the carriage for case shift movement, means for mounting said shift frame for bodily adjustment as a unit relative to the main frame to obtain proper relation between the carriage and the type bars, and a counterbalance spring also adjustable with the shift frame to preserve the proper relation of the parts. I

'7. In a typewriting machine embodying a mainframe, carriage, and pivoted type bars, the combination of a shift frame supporting the carriage for case shift movement, means for adjustingsaid shift frame bodily as a unit relative to. the main frame to obtain properrelation between the carriage and the type bars, and shift key levers adjustable with said shift frame to preserve proper lation between said levers and shift frame in all positions.

8. In a typewriting machine embodying a main frame, a carriage, and pivoted type bars, thecombination of a shift frame supporting the carriage for case shift movement, means for adjusting said shift frame bodily as a unit relative to the main frame to obtain proper relation between the carriage and the type bars, and means also adjustable with the shift frame for locking it in either case position.

9. In a typewriting machine embodying a main frame, a carriage, and pivoted type bars, the combination of a shift frame supporting the carriage for case shift movement,'means for adjusting said shift frame bodily as a unit relative to the main frame to obtain proper relation between the carriage and the type bars, and means for locking the shift frame in its upper case position also adjustable with the shift frame to preserve theproper relation of the parts.

ment, means for adjusting said shift frame bodily as a unit relative to the main frame to obtain proper relation between the carriage and the type bars, and means for giving the shift frame its case shift movement, said means also adjustable with the shift frame to preserve the proper relation of the parts.

11. In a typewriting machine embodying a main frame, a carriage, and pivoted type bars, the combination of a shift frame supporting the carriage for case shift movement, means for adjustin said shift frame bodily as a unit relative to the main frame to obtain proper relation between the carriage and the type bars, means for giving the shift frame its case shift movement, and

means for locking it in its lower case posrtion, both of said means being adjustable with the shift frame to preserve the proper relation of the parts.

12. In a typeivriting machine embodying a main frame, a carriage, and pivoted type bars, the combination of a shift frame supporting the carriage for case shift movement, means for adjusting said shift frame bodily as a unit relative to the main frame to obtain proper relation between the carriage and the type bars, and a counterbalance spring also adjustable with the shift frame to preserve the proper relation of the parts.

13. In a typewriting machine embodying a main frame, a carriage, and pivoted type bars, the combination of a shift frame supporting the carriage for case shift movement, a pair of members adjustably mounted in the main frame and entirely supporting the shift frame, said members having; forward extensions, and shift key levers supported by said forward extensions.

14. In a typewriting machine embodying a main frame, a carriage, and pivoted type bars, the combination of a shift frame supporting the carriage for case shift movement, a pair of members adjustably mounted in the main frame and entirely supporting the shift frame, said members having forward extensions, means for guiding said forward extensions in the main frame, and shift key levers supported by said forward extensions.

15. In a typewriting machine embodying a main frame, a carriage, and pivoted type bars, the combination of a shift frame sup porting the carriage for case shift move ment, a pair of members adjustably mounted in the main frame and entirely snpporting the shift frame, said members having forward extensions, shift key levers supported by said forward extensions, a shift lock key and a detent therefor carried by a forward extension.

16. In a typewriting machine, the combination of a main frame, type bars, an auxiliary frame supporting a carriage and all case shift instrumentalities, and means for iou nting said auxiliary frame for adjust.- ment relative to the main frame to preserve proper relationship between the carriage and typebars.

17. In a typewriting machine, the combination of a main frame, type bars, an auxiliary frame supporting a carriage and all case shift instrumentalities, and means for mounting said auxiliary frame for adjustment relative to the main frame at right angles to the type bar at the end of its movement to printing position to preserve proper relationship between the carriage and typebars.

18. In a typewriting machine, the combination of a main frame, type bars, an auxiliary frame supporting a carriage and all case shift instrumentalities, and means for adjusting said auxiliary frame relative to' the main frame to preserve proper relationship between the carriage and typebars.

In testimony whereof, We have hereunto subscribed our names.

LEWIS C. MYERS. GEORGE F. HANDLEY. 

